Conical paper cup



' 6, 1938- 'F. 'r-. KREIN ET AL 2,129,498

CONICAL PAPER CUP Original l' iled Sept. so, 1935 Patented Sept. 6, 1938 UNITED STATES PATENT OFFICE CONICAL PAPER our Frederick T. Krein and Torris H. Alli-eds, Park Ridge, 111., assignors, by direct and mesne assignments, to Dixie-Vortex Company, Chicag Ill., a corporation of Delaware Application I y 10 Claims.

placement in an edible cone, service dish or glass,

for the customer.

One of the objects of the present invention is to provide a cup of this kind having means for separably securing the overlapping side wall margins of the cup together in a manner permitting a quick and easy stripping or unrolling removal of the cup from its contents for placing the latter in an edible cone or other serving container.

A furtherobiect of the invention is to provide a cup of this kind having separably secured overlapping side wall parts, one of which includes a relatively free tearing tab extending the full provides a relatively tight apex end structure height of the cup whereby the cup may be unrolled from its contents without danger of merely tearing awayof a part of the cup with the resulting unsanitary engagement of the hands of the operator with said contents.

Another object of-the invention is to provide a cup of this kind with a tab at the top of the cup, above the contents thereof and by which tab the cup may be held by one hand while the other is employed in stripping the cup from its contents for insertion in an edible cone or "in a serving dish or the like. I

Still another object of the invention is to provide in a cup of this kind, a novel slit and tongue arrangement for separably securing the overlapping side wall parts together. without the aid of adhesives and in amanner permitting the use of a tearing tab extending the full height of the cup for a quick stripping of the same from its contents for serving.

. Again, it is an object of the invention to provide 7 a cup of this kind which may be produced from a blank of paper substantially of an elliptical lanceolate form. which when rolled into cup form,

therefor.

The above mentioned objects of the invention, as well as others, together with the several advantages thereof, will more fully appear as we proceed with our specification.

In the drawing:

September 30, 1935, Serial No. 42,768 Renewed December 20, 193'! Fig. l is a perspective view of a conical paper cup embodying the preferred form of the invention.

i Fig. 2 is a plan view of a blank from whichthe 6 cup shown in Fig. 1 may be made.

Referring now in detail to that embodiment of the invention illustrated in the accompanying drawing-5' indicates as a whole the blank from which the cup is formed. As shown. in Fig. 2 herein, said blank, which is made of a paper suitable for the purpose, is substantially of an elliptical lanceolate shape instead of being quadrantal o'r segmental as in the conventional practice.

Said blank has curved top and bottom edges 6 and I which meet at the ends of the blank as sub-.

stantially pointed corners 8 and 9 respectively.

The edge'1 includes edge portions I 0 and Ii respectiyely, the inner ends of which terminate as opp'gsite, curve portions l2 and i3 which meet at a point i4 located in about the transverse me--' than linelof the blank. The curve portions i2 and-l3 define lips i5 and I6 respectively on oppo-- site3: sides of a recess ll, the inner endof which 1 v reaches the point I4 and which point approximately forms the axis or center for the curved top edge 6.

In that margin E8 of the blank as defined by the edge portion l I and spaced inwardly a suitable distance therefrom, is a slit i9 and in that margin it of the blank as defined by the edge portion it is a tongue 2| formed by a slit 22. Thetongue and silt are so arranged in their respective margins that the end 23 of the slit i9 is aslight distance further from the point it than the end M of the tongue-defining slit 22, when saiddistances are'rneasured on the lines A and B respectively in Fig. 2.

Adjacent the end ii of the blank and projecting outwardly from the curved edge 6 thereof is a tab 25, the purpose of which will presently appear.

In the folding of the blank into cup form, and which may be carried out either by hand or by machine, the margins 20 and it are brought into overlapping relation, with the margin Zil on the inside of the cup and with the margin ill on the outside of the cup as shown-in Fig. l, the tongue 2| in this operation being inserted. through the slit i9. When the parts mentioned are in proper position, the end 25 of the slit 22 engages the end 23 of the slit it is separably secure the overlapping margins together so as to hold the blank in cup form.

As before mentioned, the distance between the point It andslit end 28 is a, trifle greater gm 2!! in the direction of its length. This will cause the lip I5 to wind or curl outward against the lip I6 with the result that the cup is tightly closed at its apex and as provided by the point IL. This action. will also cause the margin 20 to more tightly-hug against that part of the cup blank which it underlaps. The margin l8 outwardly beyond the tongue and slit, forms a tab for gripping by the fingers of the hand in stripping or unrolling the cup from its contents. In this respect it is pointed out that as the cup is especially intended for use in connection with ice cream or similar products, as before mentioned, it is not necessary that the overlapping engagement between the outer and inner side wall margins be water tight.

If desired, the blank may be rolled in the opposite direction to bring the margin 20 on the outside of the cup and the margin IS on the inside of the cup, the margin 20 then functioning as the full-length tearing tab. This, of course, would bring the tongue 2| on the inside of the cup instead of on theoutside of the cup as shown in Fig. 1.

Assume that the cup, as shown in Fig. 1, contains a quantity of ice cream and it is desired to serve the ice cream to a purchaser as in an edible cone. Holding tab between the fingers of one hand, the margin I8 is grasped by the fingers of the other hand and is turned over and unrolled in the direction of the edge In of the other margin, thus separating the two margins. When the cup is peeled or stripped from its contents, the latter is permitted to drop into an edible cone. In this separation, the tongue will either slip through the slit or break ofl. It the contents are to be served in a dish, the cup is held, base or mouth end down and the cup is stripped or unrolled from the ice cream in the manner above mentioned. Thus, in handling the cup in serving the contents thereof, either for use in an edible cone or in a dish, no portion of the hands or fingers or the operator comes in contact with the contents. Therefore, the serving of the contents is indeed sanitary.

Cups made in accordance with the present invention, may be easily produced by machine and nestwith each other in a manner which prevents them adhering together, as the tongue 2| and margin or tearing tabact as spacers. Also as the-tearing tab extends the full height of the cap, and as the tongue and slit separably connect the overlapping side wall parts,

at .aboutjien iidway between the top and bottom ends orthe cup, the tab or margin will not tear but will insure a clean stripping of the cup from its contents in the least possible time. In describing the invention, we have referred in detail ,to the form, arrangement and con- 'struction'ofthe cup-blank, as well to the manner in whichit is rolled into cup form, the same is to be considered only in the illustrative sense so that we do not wish to be limited thereto except as may 'bespeciflcally set forth in the, appended claims.

We claim as our invention:'--' 4 1. A conical paper cup made from a blank having an edge defining-the mouth or the cup and having inner and outer overlappingside of th wall parts each defined by a curved-edge and extending from said mouth to the'closed apex end of the cup, the curves of said edges being away from each other, means devoid .of adhesive for separably securing portions of said side wall parts together at a point between said curved edges, .the margin of the outer wall part between its edge and said means iormlnga tearing tab, at least in part, for use in separating said side wall parts in opening the cup, said means devoid of adhesive being so spaced from V the closed apex endof the cup as-to tension one of said wall parts longitudinally to cause the margin of the inner wall part between its edge and said means, to have 'a yielding en gagement against the outer side wall part.

2. A conical paper cup made froma blank having an edge defining the mouth of the cup and having inner and outer overlapping side wall parts extending from said mouth to the closed apex end of the cup, one of said side wall parts having a slit therein arrangedat an angle and spaced inwardly from the edge of said one of said wall parts, the other of said wall parts having a hook-like tongue thereinspaced from the edge of said other wall part and engaged in said slit, said slit and tongue being so relatively spaced from the closed apex end of the cup as to tension one 0! said wall parts longitudinally to cause said hooklike tongue to engage in the slit with a tighter locking action and to cause that part or said other wall part between its tongue and edge to engage with a yielding action against the associated surface of the first-mentioned wall part.

3. A paper cup blank 01' approximately an elliptical lanceolate shape andhaving one margin defined by an arcuate edge and having asecond margin defined by two substantially outwardly and oppositely curved edges, each 0! which terminates at the inner end in a curve of less than 90 in extentand of a lesser radius than that of the remainder of said curved edges and which curves of lesser radii meet at a point approximating the center for the first-mentioned edge.

4. A paper cup blank '01! approximately an elliptical lanceolate shape and having one margin defined by an arcuate edge and having another margin, defined by two substantially outwardly and oppositely curved edges each 0! which terminates at the inner end in a curve oi less than 90 in extent and of .a lesser radius than that of the remainder of said curved edge and which curves of lesser nadil meet at a point approximating the 'centerQaf the first-mentioned edge, there being a slit in gpne part 01' said second margin and a tongueii'rith a hook in another part of said second hold the blank in cup form elliptical lanceolate shape and having one margin defined by an arcuate edge and having a second margin for engagement in the, slit'to separably margin defined by two substantially oppositely fc'urvededges each of which terminates at the inner endin a curve or a lesser radius than that mainderof said curved edge and which curve for lesser radii meet at a point approx'imat ing the center of the'first-mentioned edge, there fining a tongue andthere being a second slit in another part of said second margin to receive said tongue to separably hold the blank in cup form, one end or said second-mentioned slit being spaced from said point a distance different from the distance between said point and the associa end oi. the first-mentioned slit.

being a slit in one part of said semnd margin de- 6. A paper cup blankot a general elliptical lanceolate shape and having two substantially oppositely curved edges, one ,of said edges having a pointed recess therein,

curvature of the other edge, and a. tab projecting from said other edge at a point spaced from one end of said edge.

7. A paper cup blank of a generally elliptical lanceolate shape having two substantially oppositely curved edges arranged upon opposite sides.

of a line extending through the ends of the blank, one of said edges having a pointed recess therein which is substantially coincident with the center of curvature for the other edge and which center is spaced laterally from said-line toward the edge with the recess therein.

8. A blank for a conical paper cup having two substantially pointed end portions and a curved 4 edge to one side of a line extending through said pointed end portions to form the mouth of the cup and having other edge portions to the other side of said line and disposed other'than parallel therewith to formthe overlapping sidewall parts of the cup, there being a portion projecting from one point on said curved-edge to form a tab for holding the cup.

9. As an article of manufacture a conical-like cup for receiving and having frozen therein an no edible confection such as ice cream comprising a the point of said recess forming substantially the center for thepaper blank rolled into conical form with overlapped margins and havinginterlocked portions for temporarily holding the margins together I throughout their length until ice cream is frozen therein and being readily separable upon the peeling of one of the margins off of the frozen mass to remove the cup therefrom, one of said overlapped margins proiecting beyond said interlocked portions for forming a tearing tab which extends substantially from the mouth. of the cup to its lower end.

I 10. As an article'of manufactures, conical-like cup for receiving and having, frozen therein an edible confection such as ice cream comprising a paper blank rolled into conical form with overlapped margins and having interlocked portions for temporarily holding the margins together throughout their length until ice cream is frozen therein and. being readily separable'upon the peeling of one of the margins oil? of the frozen mass to remove the cup therefrom, said interlocked portions being so constructed and arranged with 

